Water-soluble azo compound or salt thereof, ink and recording medium
A compound, hydrophilic group technology, applied in the field of recording media to which the water-soluble azo compound or its salt or ink is attached, can solve problems such as poor fastness
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Embodiment 1
[0404] (Process 1)
[0405] While dissolving 20.8 parts of 5-amino-2-chlorobenzenesulfonic acid in 200 parts of water, adjust the pH to 6 with sodium hydroxide, and then add 7.2 parts of sodium nitrite. This solution was added dropwise to 200 parts of 5% hydrochloric acid at 0°C to 10°C for 30 minutes, and then stirred at 10°C or less for 1 hour to perform diazotization reaction to prepare a diazonium reaction liquid.
[0406] On the other hand, 26.6 parts of 2-(sulfopropoxy)-5-chloroaniline was dissolved in 130 parts of water while the pH was adjusted to 7 with sodium hydroxide, 10.4 parts of sodium bisulfite and 8.6 parts of 35% fu Ermarin, methyl-ω-sulfonic acid derivatives were prepared by conventional methods. The obtained methyl-ω-sulfonic acid derivative was added to the previously prepared diazonium reaction solution, and stirred for 24 hours under the conditions of 0°C to 15°C and pH 2 to pH4. After adjusting the reaction solution to pH 11 with sodium hydroxide, it was s...
Embodiment 2
[0414] In Example 1 (Step 2), except that 5.3 parts of DL-2-amino-1-butanol was used instead of 6.2 parts of 4-amino-2-methyl-1-butanol, the same as in Example 1 was obtained to obtain 11.3 parts of the sodium salt (λmax: 418.4 nm) of the compound of the present invention represented by the following formula (102) were used.
[0415] [Chemical formula 30]
[0416]
[0417] [Preparation of Ink]
[0418] The components shown in Table 47 below were mixed to obtain a solution, and after that, the inks of Example 1, Example 2, and Comparative Example 1, and Comparative Example 2 were prepared by precision filtration using a 0.45 μm membrane filter. The value in the table means "parts", and "-" means that the ingredient is not included.
[0419] In the following table 47, "aq.NaOH (NaOH aqueous solution)" is the "remaining part" means adding 25% sodium hydroxide aqueous solution and water to the mixed solution of each component to adjust the pH of each solution to 8.0 To 9.5, and adjust t...
Embodiment 3
[0451] In Example 1 (Step 2), except that 4.5 parts of 2-(methylamino)ethanol was used instead of 6.2 parts of 4-amino-2-methyl-1-butanol, it was the same as Example 1, and 11.2 was obtained. Part of the sodium salt (λmax: 418.5 nm) of the compound of the present invention represented by the following formula (103).
[0452] [Chemical formula 32]
[0453]
[0454] [Preparation of Ink]
[0455] The ink of Example 3 was prepared in the same manner as in Example 1, except that the compound represented by the above formula (103) was used instead of the compound represented by the above formula (101).
[0456] [Inkjet Recording]
[0457] Using an inkjet printer (manufactured by Canon Co., Ltd., trade name: PIXUS ip 7230), various inks of Example 3 and the above-mentioned Comparative Example 1 and Comparative Example 2 were attached to the following glossy paper 1 to glossy paper 4, and performed Inkjet recording. During recording, an image pattern was made in a manner of obtaining six lev...
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